DuPont Crop Protection has introduced three formulations of a new preemergence grass and broadleaf herbicide. Cinch, Cinch ATZ and Cinch ATZ Lite are registered for 2003.

Cinch is a selective herbicide containing s-metolachlor as the active ingredient and benoxacor as a crop safener. The product offers season-long grass control of most annual grasses, including barnyardgrass, foxtails, crabgrass and fall panicum, in addition to small-seeded broadleaf weeds such as tall waterhemp, pigweed and eastern black nightshade, says Kevin Diehl, Dupont corn crop protection product manager. Cinch provides a wide application window and can be applied preplant, preplant incorporated, preemergence or early postemergence in all corn and some sorghum programs. It also can be tank mixed with registered tank-mix partners according to label directions. Applications to sorghum require the use of seed treatment safeners, such as Concep or Screen.

Cinch ATZ, s-metolachlor plus atrazine at 3.1 lbs./gal., also is appropriate for corn and sorghum programs. Cinch ATZ can be applied preplant, preplant incorporated, preemergence or early postemergence. For the best results and most consistent corn weed control, DuPont recommends a reduced rate at or before planting, followed with a postemergence application of Steadfast, Basis Gold or Accent. It also can be tank mixed with burndown herbicides to save an application trip on no-till acres. Cinch ATZ controls many grass and broadleaf weeds such as foxtail, barnyardgrass, pigweed, cocklebur and velvetleaf.

Cinch ATZ Lite, s-metolachlor plus atrazine at the reduced rate of 2.67 lbs./gal., targets a wide variety of grasses and broadleaf weeds. It also offers a wide application window and can be used as a one-pass control.

For more information, call 800/247-6803, visit www.cropprotection.dupont.com or www.freeproductinfo.net/fin.

Dow AgroSciences LLC announced that its Keystone herbicide has received registration and will be available for next spring. The product is a preplant/preemerge formulation of acetochlor and atrazine that controls grasses and small-seeded broadleaves. A new surfactant/additive package improves handling and keeps ingredients evenly dispersed. Keystone is effective against foxtails, barnyardgrass and crabgrass, but also offers control of waterhemp, lambsquarters, pigweed, nightshade and smartweed. Partial control is provided against woolly cupgrass and wild proso millet. A tankmix of Keystone and Hornet WDG herbicide provides one-pass, broad-spectrum control of weeds, including large-seeded broadleaf weeds.

For more information, contact AgroSciences at 800/208-4094, visit www.dowagro.com or www.freeproductinfo.net/fin.

Valent designed Valor to be used in conjunction with Roundup for either fall or spring burndown prior to field corn, sorghum, sunflowers or wheat. The combination controls broadleaves such as henbit, purple deadnettle and chickweeds throughout the fall and winter. “Valor heats up the glyphosate and adds residual control,” says John Pawlak, Valent product development manager. For spring burndown, adding Valor to Roundup speeds up burndown control from a couple weeks to three or four days, Pawlak adds. The herbicide is effective with all tillage systems.

Dan Shaw, crop specialist with Fulton FS, Lewistown, IL, tested Valor last year with good success. “We applied Valor in early November and got control of henbit and chickweed until late winter,” he reports. “It allowed no-till farmers to get into fields earlier and helped us spread out our sprayer workload. We mixed Valor with 4 oz./acre of dicamba and 1 pt./acre of crop oil on soybean stubble; on corn stalks we with mixed it with Roundup.”

Shaw also applied Valor preemergent on conventional beans last spring. “We sprayed right before planting and got good weed control until mid-summer, even in fields receiving heavy rains,” he says.

For more information, contact Valent, Box 8025, Walnut Creek CA 94596, visit www.valent.com or www.freeproductinfo.net/fin.

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